// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_RESOURCE_GETTER_IMPL_H_
#define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_RESOURCE_GETTER_IMPL_H_

#include <jni.h>
#include <stdint.h>
#include <string>

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/synchronization/waitable_event.h"
#include "media/base/android/media_resource_getter.h"
#include "media/base/android/media_url_interceptor.h"
#include "net/base/auth.h"
#include "net/cookies/canonical_cookie.h"

namespace storage {
class FileSystemContext;
}

namespace content {

class BrowserContext;
class ResourceContext;

// This class implements media::MediaResourceGetter to retrieve resources
// asynchronously on the UI thread.
class MediaResourceGetterImpl : public media::MediaResourceGetter {
public:
    // Construct a MediaResourceGetterImpl object. |browser_context| and
    // |render_process_id| are passed to retrieve the CookieStore.
    // |file_system_context| are used to get the platform path.
    MediaResourceGetterImpl(BrowserContext* browser_context,
        storage::FileSystemContext* file_system_context,
        int render_process_id,
        int render_frame_id);
    ~MediaResourceGetterImpl() override;

    // media::MediaResourceGetter implementation.
    // Must be called on the UI thread.
    void GetAuthCredentials(const GURL& url,
        const GetAuthCredentialsCB& callback) override;
    void GetCookies(const GURL& url,
        const GURL& first_party_for_cookies,
        const GetCookieCB& callback) override;
    void GetPlatformPathFromURL(const GURL& url,
        const GetPlatformPathCB& callback) override;
    void ExtractMediaMetadata(const std::string& url,
        const std::string& cookies,
        const std::string& user_agent,
        const ExtractMediaMetadataCB& callback) override;
    void ExtractMediaMetadata(const int fd,
        const int64_t offset,
        const int64_t size,
        const ExtractMediaMetadataCB& callback) override;

private:
    // Called when GetAuthCredentials() finishes.
    void GetAuthCredentialsCallback(
        const GetAuthCredentialsCB& callback,
        const net::AuthCredentials& credentials);

    // Called when GetCookies() finishes.
    void GetCookiesCallback(
        const GetCookieCB& callback, const std::string& cookies);

    // Called when GetPlatformPathFromFileSystemURL() finishes.
    void GetPlatformPathCallback(
        const GetPlatformPathCB& callback, const std::string& platform_path);

    // BrowserContext to retrieve URLRequestContext and ResourceContext.
    BrowserContext* browser_context_;

    // FileSystemContext to be used on FILE thread.
    storage::FileSystemContext* file_system_context_;

    // Render process id, used to check whether the process can access cookies.
    int render_process_id_;

    // Render frame id, used to check tab specific cookie policy.
    int render_frame_id_;

    // NOTE: Weak pointers must be invalidated before all other member variables.
    base::WeakPtrFactory<MediaResourceGetterImpl> weak_factory_;

    DISALLOW_COPY_AND_ASSIGN(MediaResourceGetterImpl);
};

} // namespace content

#endif // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_RESOURCE_GETTER_IMPL_H_
